Individual lot requirements. There shall be no maximum FAR or limitation on maximum improvement coverage for individual lots, provided that the planned commercial development conforms to a site plan approved by the board of jurisdiction, lot widths, frontages, rear yards, side yards, front yards, lot dimensions, parking lot locations and building distances may be freely arranged and disposed of. A lot need not front on a street, and there are no minimum distances between individual buildings. The intent of this provision is to permit individual stores to exist as separate lots. However, each individual lot shall be subject to and may only be improved in accordance with the final site plan approval for the planned commercial development in accordance with these district regulations. Final subdivision approval may be granted only as part of or subsequent to final site plan approval for the planned commercial development. The board of jurisdiction shall condition final subdivision approval upon submission by the applicant and approval by the board attorney of a declaration of covenants and restrictions or other suitable instrument setting forth the mechanisms by which and providing adequate assurances that security, outside cleaning and other routine external maintenance, external repainting, maintenance of the common open space, garbage collection, snow removal and other appropriate items will be provided for the planned commercial development.